Molding-machine.



No. 736,841. PATENTED AUG. 18, 1903.. B. A. GOEPPER MOLDING MACHINE.

APPLIOATION FILED AUG. 28. 1902.

N0 MODEL. 2 SHEBTS-SHEET 1.

abbot/neg PATENTED AUG. 18; 1903.;

E. A. GOEPPER. MOLDING MACHINE. APPLICATION IILED AUG. 2B, 1902.

2 SHEETS-SHEET 2.

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1 UNITED STATES Iatented August 18, 1905;.

PATENT QFFICE.

EMIL AUGUST GOEPPER, OF LOUISVILLE, KENTUCKY, ASSIGN OR OF ONE- I-IALF TO V. A.- LLOYD, OF LOUISVILLE, KENTUCKY.

MOLDING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 736,841, dated August 18, 1903.

Application filed August 28,1902. Serial 1%. 121.311. (No model.)

To all whom it may concern:

Be it known that I, EMIL AUGUST GOEPPER, a citizen of the United States, residing at Louisville, Jefferson county, Kentucky, have invented certain new and useful Improvements in Molding-Machines and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to certain improvements in molding-machines employed in metal-foundry work, and relates more particularly to machines provided with the patterns and to which the flasks containing the sand are applied in the formation of the sand molds.

An object of the invention is to provide a molding-machine wherein the patterns are secured on a plate or support, so that the sand mold can be formed thereon, and in a flask with improved means whereby the expensive stripping-plates can be dispensed with and the machine simplified in construction and improved in action.

The invention consists in certain novel features in construction and in combinations and arrangements of parts, as more fully and particularly pointed out'and set forth hereinafter.

Referring to the accompanying drawings, which show merely for purposes of explanation a construction as an example among other constructions within the spirit and scope of my invention, Figure 1 is a perspective viewof a molding-machine constructed according to my invention, showing the pattern to form the cope on the pattern-plate, the flask and sand not being shown, and the flask-elevating mechanism being shown in its normal withdrawn or lowered position. Fig. 2 is a vertical section through the machine, the flask and sand not being shown, the flask-elevating mechanism being shown in its elevated position. Fi g. 3 is a vertical section of the machine, taken in a plane at right angles to the plane of the section of Fig. 2, the flask and sand mold being shown held in an elevated position above and free of the patterns.

Sand-moldin g machines as usually employed in foundries provide plates to which the patterns are secured and means for raising and lowering the patterns, so that when the mold has been formed the pattern-plate can be dropped to carry the pattern clear of the mold. Such machines require the employment of expensive stripping-plates and are expensive in construction and not always accurate in the formation of the mold.

I have devised a machine for forming sand molds which is simple, durable, and accurate in construction and which does not require the employment of stripping-plates, in which the patterns are secured 011 a stationary pattern-plate on which the flask rests and on which the mold is formed, and I provide means for raising or elevating the flask with its sand molds clear of the patterns, so that the flask can be easily removed and reversed,if need be.

My invention is applicable to many types of sand-molding machines, although in the drawings I have shown but one type of machine, merely as an example for purposes of explanation and illustration.

In the drawings, 1 is the pedestal or base of the machine, on the upper end of which the lower end of an upright framework is secured, comprising the two vertical standards 2.

3 is the flat horizontal pattern-plate rigid with the upper end of the standards 2.

4 represents any suitable patterns fixedon the pattern-plate and resting on and projecting above the top face thereof.

5 represents the usual rigid vertical flask guiding or holding pins secured to and projecting up from the pattern-plate and usually arranged adjacent to the edges thereof, so as to fit at the outer edges or sides of the removable flask 6, which rests on the top face of the pattern-plate, so that the patterns project upwardly within the flask which contains the sand 7 and so that the sand can be properly molded on the patterns and within the flask. The pins 5 permit free vertical movement of the flask to and from the top surface of the pattern-plate andhold and confine the flask in proper position against lateral or horizontal movement or displacement.

After the sand in the flask has been properly packed and molded on the patterns it is necessary that the patterns and mold be separated, so that the mold can be removed and vide mechanism for lifting or elevating the flask with its mold clear of and to a point above the patterns and the flask-pins 5, so that the flask can be easily removed without injury to the mold. As a means which can be employed for this purpose, yet, as at present advised, without desiring to so limit my invention, I show the pattern-plate formed with guideways or holes 8, extending vertically therethrough beneath the lower edges of the flask and outside of the portions of the plate occupied by the patterns. Vertically and simultaneously reciprocating lift slides or pins 9 are arranged in these guideways and are normally located below or flush with the top surface of the pattern-plate to avoid interference with the flask and proper formation of the sand mold. These lift-pins are parallel with each other, and their upward ends are adapted to abut against the lower edge of the flask outside of the mold and to reciprocate or move upwardly the necessary distance to clear the flask from the pins 5 and to clear the mold from and lift the same to a point or plane entirely above the pattern. These lift-pins are so distributed or spaced as to properly support and uplift the flask and maintain the same in the desired horizontal position with the flask merely resting on the upper ends of the pins. In the particular example illustrated I show four lift-pins 9, the pins being arranged in pairs, two at each end of the flask.

In the example illustrated the vertical parallel lift-pins 9 are at their lower ends rigidly secured to a horizontal vertically-reciprocating plate 10, located below and parallel with the pattern-plate and between the two frameuprights 2.

11 is a loop or double frame rigid with and depending from the plate 10 and at its lower end provided with a depending vertical spindle or rod 12, passing through a guide-opening in the upper end of the pedestal 1. This sliding guide pin or spindle 12 is provided with a vertically-adjustable stop 13 in the form of a vertically-movable collar clamped to the pin by one or more set-screws. The collar 13 is arranged above and adapted to contact with the upper end of the pedestal to limit the downward movement of the guidepin and the lift-pins 9 moving therewith. The collar can be adjusted longitudinally of the guide-pin to vary the limit of downward movement of the lift-pins.

14 is a horizontal cross-bar or plate rigid with the frame upright 2 and rigidly c011- nected with the pattern-plate by the rigid up.- rights 15. r

16 represents parallel vertical guide-pins rigid with and depending from the reciprocating plate 10 and passing loosely and vertically through the rigid cross-bar 14 to guide the plate 10 in its reciprocation and maintain the same in its proper position against lateral displacement.

17 represents journal-boxes rigid with and depending from the cross-bar 14 and located on opposite sides of the frame 11, depending from the plate 10.

18 is a horizontal rock-shaft mounted in the journal-boxes 17 and extending through the machine between the sides of the depending frame 11 and the frame-uprights 2. An extended end of this rock-shaft has the crankhandle 19 rigidly secured thereto. This rockshaft, at apoint between the journal-boxes, is provided with the crank 20, rigidly secured thereto.

21 represents curved links at their upper ends pivotally joined by horizontal axis to the free end of the crank 20 and at their lower ends pivotally joined to the lower end of the depending frame 11 bya horizontal axis or pin 22.

The operating parts are so adjusted that when the handle or lever 19 and the crank 20 are about in horizontal position the parts moving therewith Will be at their limits of downward movement with the stop 13 resting on the upper end of the pedestal and the liftpins 9 Withdrawn, with their upper ends flush with or below the top surface of the patternplate, so that the flask can rest directly on the pattern-plate and the sand therein can be packed onto the pattern-plate and patterns to properly form the mold. When the mold has been properly formed and is ready for removal, the operator swings up the lever 19, thereby moving the crank 20 approximately to the upright vertical position and through the medium of the links 21 reciprocating the frame l1,the various guide-pins,and the plate 10 vertically to their limits of upward movements and reciprocating the lift-pins 9 upwardly, and thereby lifting the flask and its mold to a position entirely above and free of the pattern, so that the flask can be readily lifted from said pins. After the flask has been removed the lift-pins are restored to their normal withdrawn positions by the operating mechanisms, and the machine is thus in condition to receive another flask. Also various constructions of operating devices can be employed for actuating the improved flask-lifting mechanisms. Also my invention contemplates the application of my improved flasklifting mechanism to various types and constructions of molding-machines, whether or not the flask-lifting mechanism be manually operated or provided with power-operatin g means.

It is obvious that various modifications and variations might be resorted to in the forms, arrangements, and constructions of the parts described without departing from the spirit and scope of my invention. Hence I do not wish to limit myself to the constructions 'shown, but consider myself entitled to all such variations as fall within the spirit and scope of my'invention.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent of the United States, is

l. A molding-machine having a fixed pattern-plate adapted to solely support a pattern resting entirely upon the surface of the plate,

a reciprocating frame below the pattern-plat e,

frame, a pattern-plate secured thereto, a crossbar joining the members of the fixed frame,

a reciprocating frame below the pattern-plate,

flask-lifting pins carried by the reciprocating frame and operative through the patternplate, and means operative through said crossbar for guiding thereciprocating frame.

4. A molding-machine comprising a base having a rigid upright frame, a pattern-plate carried by the frame adapted to solely sup-.

port a pattern resting entirely upon the surface of the plate, a reciprocating frame below the pattern-plate and carrying flask-lifting means, a cross-bar secured in the upright frame and guiding the reciprocating frame,

j ournal-boxes depending from the cross-bar,

and mechanism supported on said. boxes for operating the reciprocating frame.

5. A molding-machine comprising apattern-plate adapted tosolely support a pattern resting entirely upon the surface of the plate,

a movable frame guided at top and bottom, flask-lifting pins carried by the movable frame and operative through .the pattern- K plate, and adjustable means for limiting the movement of said movable frame.

6 A molding -machine comprising a pattern-plate adapted to solely support a pattern resting entirely upon thesurface of the plate, a movable frame, flask-lifting pins carried by the movable frame and operative through the pattern-plate, guides for the upper. end of said frame, aguide forthe lower end of said frame, and an adjustable stop onthe latter guide tolimit the movement of the frame.

7. A molding-machine comprising a fixed frame, a pattern-platecarried thereby adapted to solely support a patternresting entirelyv upon the surfaceof the plate, a reciprocating.

frame arranged below the pattern-plate,flasklifting pins carried by the reciprocatingframe and operative through the pattern plate, a cross-bar integral with the fixed frame adapted to guide the upper end of the reciprocat- 8,. Incombination a frame, a fixed patternplate carried thereby adapted to solely support a pattern resting entirely upon the surface of the plate, a verticallyreciprocating slide having flask lifting pins operative through the pattern-plate to abut against the flask and lift the. same clear of the patterns, guides for said slide, means for reciprocating said slide, and an adjustable stop whereby the limit of movement of said lifting-pins can be varied, substantially as described.

9. In a molding-machine, in combination, a frame, a stationary pattern plate carried thereby and having guideways therethrough beneath the top portion of the plate on which the lower edge of the sand-mold flasks rests,

said pattern -.platebeing adapted to solely support a pattern resting entirely upon the surface of the plate, parallel vertical lifting slides movable in said guides and normally withdrawn below the top surface of the plate, a reciprocating member rigid with said slides, an adjustable stop limiting the movement of said member, and actuating mechanism'for reciprocating said member to simultaneously project all of saidslides upwardly to lift the flask from the pattern-plate, substantially as described.

. 10.. In a molding-machine, in combination,

a frame, a stationary pattern plate carried thereby, adapted to solely support a pattern resting entirely upon the surface of the plate, flask-lifting slides normally Withdrawn below the top surface of the plate and arrangedto project upwardly and engage and lift the flask from the plate, acarrierfor said slidescomprising anadjustable stop limiting the downward movement of the slides, and actuating means for reciprocating said carrier and-the slides, substantially as described.

11. I11 a molding-machine, in combination,

.an upright frame, a stationary pattern-plate mounted thereon and having guideways extending vertically therethrough,said pattern- IIO tern-plateand provided with parallel rigid Ways, a frame rigid with and depending from said reciprocating plate and at its lower end provided with. a guide-pin Working in the frame, an adjustable stop on said. guide-pin for varying the limit of downward movement of the lift-pins, a rock-shaft mounted in the frame, a crank rigid with said shaft, and a curved link pivotally joined to said crank and to said depending frame, substantially as de- 'EMIL AUGUST GOEPPEB.

VVilJIIGSSBSt I V. A. LLOYD, S. S, GANns. 

